This difference in pyrolysis among the three [beta] resins was caused by the dissimilarity in their aromaticity index (Iar) and CH3/CH2 ratio; these factors significantly affect the aromaticity and number of aliphatic
side chains in [beta] resin.
The molecular weight of PSEA-2 ([M.sub.w] = 4819 g/ mol) was higher than that of PSMA ([M.sub.n] = 1600g/mol) due to the expansion of hydrodynamic volume after an imidization step that introduced bulky substituents in
side chains of a relatively flexible PSMA polymer.
"The beaklooking side is used to crimp the cross chain hook ends to the
side chains," says Tom Clark, Lone Pine, Calif.
(4,5) investigated in detail the dependence of the length of the fluorinated
side chains on the surface properties of polyacrylates with long
side chains.
The synthesized polymers are soluble in organic solvents, since they may have long, flexible, bulky
side chains.
In this article, graft polymers with polysiloxane as the main chain and olefin as
side chains were designed and synthesized to serve as compatibilizers for the NR/SR blends.
In contrast, the conformations of the
side chains of 1 and 14 were different based on the [sup.1]HNMR chemical shifts, as well as the [sup.3][J.sub.HH] and NOE data (Fig.
The hydrophobic effect is driven by the entropy increase of the solvent water molecules; hydrophobic
side chains are located predominantly in the interior of a protein.
One of the challenges was that without alkyl
side chains, the tellurium-bearing ring is very unstable.
Via sugar
side chains, the extracellular matrix determines which cell type a stem cell can generate.